Application:
Two-hand control panels are non-separating protection devices. In general, they serve to ensure the location of both hands of a machine operator who gives a control signal for a movement which can be dangerous. Two-hand control panels thus ascertain that intervention by the operator in dangerous moving processes is avoided when a machine or plant has been started.
The areas of application include presses for metal working, powder metallurgy, printing and paperprocessing machines, croppers and similar, as well as machinery in the rubber, plastic and chemical industries.
Two-hand control panels are the preferred protection devices for use in setting-up work and single-stroke operations for feed and removal processes.
Further information on the use of two-hand operation consoles and their evaluation is given in EN 574.
In order to achieve Category 0 to EN 60204-1, an additional signal evaluation circuit is needed. Safety monitoring modules for secure evaluation of signals from two-hand control panels and Emergency Stop devices are to be found in chapter "two-hand modules".
Design and mode of operation:
Two-hand control panels are protection devices, which require the simultaneous use of both hands for their actuation. By virtue of their forced location, both hands are kept out of the area of danger. In order to start and continue the operation of a machine or plant which can be dangerous, the location of the hands is controlled as long as danger can continue to be present.
The two-hand control panels are mounted as standard with an Emergency Stop push button to EN 418 and two operating units. In addition, there are guard hoods over the operating elements, which prevent simple manipulation of the protection function using hands, elbows, stomach, hips, thighs or knees, for example.
EN 574 differentiates between various types of two-hand switching circuits with regard to their technical degree of control security. In this respect, the selection of the type depends on the evaluation and the risk assessment.
- Features:
- in accordance with EN 574:1997
- usually BG- UL- and CSA-approved
- control panel designed for additional operating controls and indicator lights
- casing protection class usually IP 65
- split casing available
- casing made of sturdy AL-die casting, AL-sand casting, and plastic
- ergonomic design
- for some types terminal blocks and relay mounting possible in the inner section
- for some types detachable AL-covers to simplify wiring
- designs available for sedentary work and for separate assembly of operating elements
- operating elements: ergonomic, robust with reduced key drop and minimised actuating force
- sturdy welded steel structures, different cable configurations possible
- optionally mobile and/or height-adjustable / with spacer ring
- some types suitable for mounting with foot switch (including protective cover)
- threaded hole for floor-attachment
Two-hand control panels
Stands
from your local/national Elan agency, or direct from:
Holger Becker
+49 (0)641 9848-214
with AS-i SAW adapter box